He was polite, but also very friendly and relaxed as you say.

他很有礼貌，但正如您所说的，他也非常友善和令人放松。

youdao

She was not only intelligent but also very musical.

她不仅聪明，而且极具音乐天分。

《牛津词典》

Email is very useful, but also very dangerous, as you don't know where your message might end up!

电子邮件非常有用，但也非常危险，因为你不知道你的信息可能会传到哪里！

youdao

But "Billboard's Boxscore" also shows a few musicians still had some very profitable concert tours this year.

VOA: special.2010.12.17

He revises it away from that to the more generalized, fundamental, but also very personal figure of the mother and the maternal.

但对母亲以及母性来说，这也是一很个人化的角色。

耶鲁公开课 - 1945年后的美国小说课程节选

but also very non-affrontively, express a lack of complete knowledge

又不冒犯地表达对某事不完全清楚，

I don't know 课堂 - SpeakingMax英语口语达人

It's a question to be addressed at the policy level, but also very much so at the individual level.

NPR: Women Of Color Lag Behind In Wealth

And by nature these can be high-risk but also very high-reward investments, and we are committed to that process.

WHITEHOUSE: Press Briefing

"He was relentless in his vision, but also very respectful, and it encouraged me to give it more and more, " the 76-year-old actor told a press conference.

BBC: Cannes: Robert Redford gets ovation for All Is Lost